我目前正在MATLAB中编写MEX文件,该文件使用C语言中的CPLEX API来解决线性编程问题。不幸的是,当我尝试编译并且我不知道如何解决它时,我遇到了“找不到架构x86_64的符号”问题。
一些基本信息:
yprime.c
和其他不使用CPLEX API的MEX文件我非常感谢人们可能提出的任何建议。我在下面提供了一份详细的错误报告。
-> mexopts.sh sourced from directory (DIR = $PREF_DIR)
FILE = /Users/berk/.matlab/R2011b/mexopts.sh
----------------------------------------------------------------
-> MATLAB = /Applications/MATLAB_R2011b.app
-> CC = llvm-gcc-4.2
-> CC flags:
CFLAGS = -fno-common -no-cpp-precomp -arch x86_64 -isysroot /Developer/SDKs/MacOSX10.6.sdk -mmacosx-version-min=10.5 -fexceptions -Wall
CDEBUGFLAGS = -g
COPTIMFLAGS = -O2 -DNDEBUG
CLIBS = -L/Applications/MATLAB_R2011b.app/bin/maci64 -lmx -lmex -lmat -lstdc++
arguments = -DMX_COMPAT_32
-> CXX = llvm-g++-4.2
-> CXX flags:
CXXFLAGS = -fno-common -no-cpp-precomp -fexceptions -arch x86_64 -isysroot /Developer/SDKs/MacOSX10.6.sdk -mmacosx-version-min=10.5
CXXDEBUGFLAGS = -g
CXXOPTIMFLAGS = -O2 -DNDEBUG
CXXLIBS = -L/Applications/MATLAB_R2011b.app/bin/maci64 -lmx -lmex -lmat -lstdc++
arguments = -DMX_COMPAT_32
-> FC = gfortran
-> FC flags:
FFLAGS = -fexceptions -m64 -fbackslash
FDEBUGFLAGS = -g
FOPTIMFLAGS = -O
FLIBS = -L/Applications/MATLAB_R2011b.app/bin/maci64 -lmx -lmex -lmat -L -lgfortran -L -lgfortranbegin
arguments = -DMX_COMPAT_32
-> LD = llvm-gcc-4.2
-> Link flags:
LDFLAGS = -Wl,-twolevel_namespace -undefined error -arch x86_64 -Wl,-syslibroot,/Developer/SDKs/MacOSX10.6.sdk -mmacosx-version-min=10.5 -bundle -Wl,-exported_symbols_list,/Applications/MATLAB_R2011b.app/extern/lib/maci64/mexFunction.map
LDDEBUGFLAGS = -g
LDOPTIMFLAGS = -O
LDEXTENSION = .mexmaci64
arguments =
-> LDCXX =
-> Link flags:
LDCXXFLAGS =
LDCXXDEBUGFLAGS =
LDCXXOPTIMFLAGS =
LDCXXEXTENSION =
arguments =
----------------------------------------------------------------
-> llvm-gcc-4.2 -c -I/Users/berk/Applications/IBM/ILOG/CPLEX_Studio_Academic123/cplex/include/ilcplex/ -I/Applications/MATLAB_R2011b.app/extern/include -I/Applications/MATLAB_R2011b.app/simulink/include -DMATLAB_MEX_FILE -fno-common -no-cpp-precomp -arch x86_64 -isysroot /Developer/SDKs/MacOSX10.6.sdk -mmacosx-version-min=10.5 -fexceptions -Wall -DMX_COMPAT_32 -O2 -DNDEBUG "addcutsmx.c"
addcutsmx.c:488:4: warning: "/*" within comment
addcutsmx.c:37: warning: 'free_and_null' declared 'static' but never defined
addcutsmx.c:38: warning: 'usage' declared 'static' but never defined
-> llvm-gcc-4.2 -O -Wl,-twolevel_namespace -undefined error -arch x86_64 -Wl,-syslibroot,/Developer/SDKs/MacOSX10.6.sdk -mmacosx-version-min=10.5 -bundle -Wl,-exported_symbols_list,/Applications/MATLAB_R2011b.app/extern/lib/maci64/mexFunction.map -o "addcutsmx.mexmaci64" addcutsmx.o -L/Applications/MATLAB_R2011b.app/bin/maci64 -lmx -lmex -lmat -lstdc++
Undefined symbols for architecture x86_64:
"_CPXLopenCPLEX", referenced from:
_mexFunction in addcutsmx.o
"_CPXLcreateprob", referenced from:
_mexFunction in addcutsmx.o
"_CPXLchgobjsen", referenced from:
_mexFunction in addcutsmx.o
"_CPXLnewcols", referenced from:
_mexFunction in addcutsmx.o
"_CPXLaddrows", referenced from:
_mexFunction in addcutsmx.o
"_CPXLlpopt", referenced from:
_mexFunction in addcutsmx.o
"_CPXLsolution", referenced from:
_mexFunction in addcutsmx.o
"_CPXLgetbase", referenced from:
_mexFunction in addcutsmx.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status
mex: link of ' "addcutsmx.mexmaci64"' failed.
Error using mex (line 206)
Unable to complete successfully.
答案 0 :(得分:2)
您似乎缺少-lcplex
或系统上cplex的相关链接说明。
用户手册说正确的包含和链接参数位于cplex发行版的readme.html中,以及示例项目和makefile。
从Using Cplex with Matlab开始,它表示您已指定完整的库链接路径并包含路径。根据您的操作,您可能还需要为mex指定-lilocplex
。
E.g。 mex -I/cplex_include_fullpath -L/cplex_library_fullpath -lcplex file.c